public void ObserversAreNotifiedWhenStateChanges_TestObserver_ObserverNotified()
{
//Arrange
var spectatorMock = new Mock <IObserver>();
var spectator2Mock = new Mock <IObserver>();
var monkeyName = "Singe1";
var monkey = new Monkey(monkeyName);
var trickName = "Salto";
var trickType = TrickType.Acrobatie;
var trick = new Trick(trickName, trickType);
monkey.Attach(spectatorMock.Object);
monkey.Attach(spectator2Mock.Object);
//Act - Assert
monkey.PerformTrick(trick);
spectatorMock.Verify(x => x.Update(monkey, trick), Times.Once);
spectator2Mock.Verify(x => x.Update(monkey, trick), Times.Once);
monkey.Detach(spectator2Mock.Object);
spectator2Mock.Invocations.Clear();
monkey.PerformTrick(trick);
spectatorMock.Verify(x => x.Update(monkey, trick), Times.Exactly(2));
spectator2Mock.Verify(x => x.Update(monkey, trick), Times.Never);
}
public void RemoveObserver_TestSpectator_SpectatorNotNotified()
{
//Arrange
var monkey = new Monkey(monkeyName);
var spectatorMock = new Mock <IObserver>();
monkey.Attach(spectatorMock.Object);
monkey.Detach(spectatorMock.Object);
//Act
monkey.PerformTrick(trick);
//Assert
spectatorMock.Verify(x => x.Update(monkey, trick), Times.Never);
}
